Linked Life Data

17141727

Source:http://linkedlifedata.com/resource/pubmed/id/17141727

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2007-2-27
pubmed:abstractText
Alpha1-antitrypsin is well known for its ability to inhibit human neutrophil elastase. Pretreatment of alpha1-antitrypsin with hypohalous acids HOCl and HOBr as well as with the myeloperoxidase-hydrogen peroxide-chloride (or bromide) system inactivated this proteinase. The flavonols rutin, quercetin, myricetin, and kaempferol inhibited the inactivation of alpha1-antitrypsin by HOCl and HOBr with rutin having the most pronounced effect. In contrast, these flavonols did not remove the proteinase inactivation by the myeloperoxidase-hydrogen peroxide-halide system. Taurine did not protect against the inactivation of alpha1-antitrypsin by HOCl, HOBr, or the myeloperoxidase-hydrogen peroxide-halide system, while methionine was efficient in all systems. A close association between myeloperoxidase and alpha1-antitrypsin was revealed by native gel electrophoresis and in-gel peroxidase staining. In addition, alpha1-antitrypsin binds to the myeloperoxidase components transferred after SDS-PAGE on a blotting membrane. With this complex formation, myeloperoxidase overcomes the natural antioxidative protective system of plasma and prevents the inactivation of alpha1-antitrypsin.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0003-9861
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
459
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
137-42
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Differential effects of flavonols on inactivation of alpha1-antitrypsin induced by hypohalous acids and the myeloperoxidase-hydrogen peroxide-halide system.
pubmed:affiliation
Laboratory of Applied Biochemistry, Department of Biology, Faculty of Sciences, University of Ferhat ABBAS, 19000 Setif, Algeria.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't